Cleaning appliance

ABSTRACT

A cleaning appliance including: a housing provided in a hollow cylinder shape, having an intake unit and an exhaust unit; a fan provided to include an impeller located in the housing, a rotary shaft to which the impeller is fixed, and a motor rotating the rotary shaft; a particle separator provided inside the housing to provide a path for guiding the air entering the intake unit to the impeller; a battery housing located at a point spaced apart from a the intake unit, as much as 180°, in a space provided by a circumferential surface of the housing and protruded to be far away from the circumferential surface of the housing; a battery provided in the battery housing, supplying a power to the motor; and a handle provided to connect the circumferential surface of the housing with the battery housing.

TECHNICAL FIELD

The present disclosure generally relates to a cleaning appliance.

BACKGROUND

A cleaning appliance is an appliance for cleaning the indoor by suckingparticles such as dust. It is general that a conventional cleaningappliance includes a housing provided with an intake unit and an exhaustunit, a fan for moving the air entering the intake unit to the exhaustunit, a separator for separating particles from the air moving by thefan, a battery for supplying a power to the fan, and a handle providedin the housing.

Meanwhile, the conventional cleaning apparatus has a problem in that thecenter of gravity of the appliance is formed at a position far away fromthe handle because the intake unit is provided on a front surface of thehousing, the handle is provided on a rear surface of the housing and theseparator and the fan, which are heavy parts, are provided inside thehousing.

The case that the center of gravity of the cleaning appliance is faraway from the handle means that the center of gravity of the cleaningappliance is far away from a user's wrist, and if the center of gravityof the cleaning appliance is far away from a user's wrist, a problemoccurs in that a big force is required for direction switching orposition change of the cleaning appliance.

Also, the fan provided in the conventional cleaning appliance isgenerally provided to discharge the air toward the handle. However, inthis case, since the air is discharged to the user's hands which aregripping the handle, a problem occurs in that displeasure is caused tothe user.

SUMMARY Technical Problem

An object of the present disclosure is to provide a cleaning applianceof which handling is easy.

Another object of the present disclosure is to provide a cleaningappliance which is capable of preventing the air from being dischargedtoward a user's hands.

Technical Solution

The present disclosure provides a cleaning appliance including a housingprovided in a hollow cylinder shape, having an intake unit and anexhaust unit; a fan provided to include an impeller located in thehousing, a rotary shaft to which the impeller is fixed, and a motorrotating the rotary shaft, moving the air entering the housing throughthe intake unit to the exhaust unit; a particle separator providedinside the housing to provide a path for guiding the air entering theintake unit to the impeller, separating particles from the air by usinga centrifugal force; a battery housing located at a point spaced apartfrom a pint where the intake unit is located, as much as 180°, in aspace provided by a circumferential surface of the housing and protrudedto be far away from the circumferential surface of the housing; abattery provided in the battery housing, supplying a power to the motor;and a handle provided to connect the circumferential surface of thehousing with the battery housing, wherein the rotary shaft is inclinedat an angle greater than 0° and smaller than 90° toward a directionwhere the handle is located based on a vertical line passing through thecenter of gravity of the particle separator.

The rotary shaft may be provided to be inclined at an angle of 30° to60° toward a direction where the handle is located based on a straightline passing through the center of gravity of the particle separator.

The rotary shaft may be provided to be inclined at an angle of 45°toward a direction where the handle is located based on a straight linepassing through the center of gravity of the particle separator.

The housing may include a first housing providing a space in which theparticle separator is stored, provided with the intake unit on acircumferential surface; a second housing providing a space in which thefan is stored, inclined from an upper end of the first housing toward adirection where the handle is located; a first cover provided to open orclose a lower surface of the first housing; and a second cover providedto open or close an upper surface of the second housing and providedwith the exhaust unit.

The angle of the second housing inclined toward the handle based on thevertical line passing through the center of gravity of the particleseparator is set to be equal to the angle of the rotary shaft inclinedtoward the handle.

The handle may include a bar shaped handle body extended from thebattery housing toward the second housing; and a bar shaped connectionbody connecting the handle body with a circumferential surface of thesecond housing.

A length of the battery from the circumferential surface of the firsthousing toward a direction headed for the handle may be set to be longerthan a length of the battery toward a height direction of the firsthousing and a length of the battery toward a diameter direction of thefirst housing.

The center of gravity of the fan may be located between the center ofgravity of the particle separator and the center of gravity of thebattery, and the center of gravity of the battery may be located betweenthe center of gravity of the fan and the center of gravity of thehandle.

The center of gravity of the fan may be located above a reference linepassing through the center of the intake unit, the center of gravity ofthe particle separator and the center of gravity of the battery may belocated below the reference line, and the center of gravity of thehandle may be located on the reference line or below the reference line.

The center of gravity of the fan, the center of gravity of the particleseparator, the center of gravity of the battery and the center ofgravity of the handle may all be located on a single vertical line thatincludes the reference line.

The particle separator may include a partition provided inside thehousing, partitioning the first housing and the second housing from eachother; a partition through hole provided to pass through the partition;chamber bodies provided in a hollow cylinder shape, having one end fixedto the partition and the other end which is in contact with the firstcover, and partitioning an inner space of the first housing into a firstchamber communicated with the intake unit and a second chambercommunicated with the partition through hole; a body partitionpartitioning an inner space of the second chamber into a first spacecommunicated with the partition through hole and a second space which isnot communicated with the partition through hole; a communication holeprovided to pass through the chamber bodies to communicate the firstspace with the first chamber; a path body provided in a pipe surroundingthe partition through hole, having one end fixed to the partition andthe other end communicated with the second space by passing through thebody partition; a discharge pipe provided as a pipe extended from thepartition through hole toward the body partition and provided inside thepath body; an inlet provided to pass through the path body, guiding theair supplied to the communication hole to the inside the path body; andan air flow forming portion provided in a screw shape between thedischarge pipe and the path body, rotating the air entering the inletinside the path body.

The fan may include a case provided in the second housing, storing theimpeller therein; a case intake hole provided on one surface of the caseheaded for the partition through hole to allow the air to enter theinside of the case; and a case exhaust hole provided on one surface ofthe case headed for the exhaust unit to discharge the air inside thecase to the outside.

The cleaning appliance of the present disclosure may further include afirst filter located between the partition through hole and the caseintake hole, filtering the air; and a second filter located between thecase exhaust hole and the exhaust unit to filter the air, wherein thesecond filter may be provided to filter particles smaller than thosefiltered by the first filter.

Advantageous Effects

The present disclosure may provide a cleaning appliance that improves auser's convenience (handling) by decentering the center of gravity ofcomponents constituting the cleaning appliance based on a user's wrist.

Also, the present disclosure may provide a cleaning appliance which iscapable of preventing the air from being discharged toward a user'shands.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 illustrates an example of a cleaning appliance, consistent withthe disclosed embodiments.

FIG. 2 illustrates an example of a cleaning appliance, consistent withthe disclosed embodiments.

FIG. 3 illustrates an example of a particle separator, consistent withthe disclosed embodiments.

FIG. 4 illustrates an example of a particle separator, consistent withthe disclosed embodiments.

FIG. 5 illustrates the center of gravity of main components of acleaning appliance, consistent with the disclosed embodiments.

FIG. 6 illustrates the center of gravity of main components of acleaning appliance, consistent with the disclosed embodiments.

DETAILED DESCRIPTION

Hereinafter, the present disclosure will be described with reference todrawings and embodiments, which specifically specify components of thepresent disclosure but are used to assist understanding of the presentdisclosure.

Also, specific components in the following embodiment may be exaggeratedor downsized for convenience of description and understanding.Therefore, the present disclosure is not limited to the embodimentdescribed below, and various corrections and modifications may be madefrom the embodiment by the person with ordinary skill in the art towhich the present disclosure pertains.

FIGS. 1 and 2 illustrate an example of a cleaning appliance 100 of thepresent disclosure. The cleaning appliance of the present disclosureincludes a housing 1 provided in a hollow cylinder shape, an intake unit15 and an exhaust unit 17 provided in the housing 1, a fan 5 (see FIG.2) provided inside the housing, moving the air from the intake unit 15to the exhaust unit 17, a particle separator 4 (see FIG. 3) guiding theair entering the intake unit 15 to the fan 5 and separating particlesfrom the air by using a centrifugal force, and a handle 8 provided inthe housing 1 to allow a user to grip it.

The handle 8 may be provided to be located at a point (point spaced asmuch as) 180° symmetrical to a point, in which the intake unit 15 islocated, from a space provided by a circumferential surface of thehousing 1.

The housing 1 may include a first housing 11 providing a space in whichthe particle separator 4 is stored, and a second housing 13 provided tobe communicated with the first housing 11, providing a space in whichthe fan 5 is stored. FIG. 1 illustrates an example of a case that thesecond housing 13 is located above the first housing 11.

The first housing 11 and the second housing 13 may be provided in ahollow cylinder shape, and the second housing 13 may be provided to beinclined from an upper end of the first housing 11 toward a direction(direction of a position of the handle) opposite to a position of theintake unit 15.

The intake unit 15 is provided on a circumferential surface of the firsthousing 11 to allow the external air to enter the inside of the firsthousing. As shown in FIG. 2, the intake unit 15 may include an intakehole 153 provided to pass through the first housing 11, and an intakepipe 151 extended from the intake hole 153 toward a direction (directionfar away from the handle, Y-axis direction) far away from the center ofthe first housing 11.

Although not shown, the cleaning appliance of the present disclosure mayfurther include an extension pipe detachably provided in the intake pipe151, and a nozzle provided on a free end of the extension pipe to moveparticles to the extension pipe.

The exhaust unit 17 is provided to pass through an upper surface or acircumferential surface of the second housing 13 and discharges the airinside the second housing 13 to the outside. FIG. 2 illustrates anexample of a case that the exhaust unit 17 is provided on the uppersurface of the second housing 13.

The exhaust unit 17 may include an upper through hole 171 (see FIG. 1)provided to pass through the upper surface of the second housing 13, acover 173 (second cover) provided to open or close the upper throughhole, and an exhaust hole 175 provided to pass through the second cover.

Since the second housing 13 is provided to be inclined toward the handle8 and the exhaust hole 175 is located on the upper surface of the secondhousing 13, the air discharged through the exhaust hole 175 is notheaded for the handle 8.

If the exhaust unit 17 is provided on the circumferential surface of thesecond housing 13, the exhaust unit 17 may be provided with a pluralityof exhaust holes passing through the circumferential surface of thesecond housing 13. In this case, the exhaust holes should be provided inan area, which is opposite to the position of the handle 8, in a spaceprovided by the circumferential surface of the second housing 13. Thisis to allow the air discharged from the exhaust hole to prevent frombeing headed for the handle 8.

As shown in FIG. 1, the first housing 11 may further be provided with adischarge unit 18 for discharging particles stored in the housing 1 tothe outside. The discharge unit 18 may include a lower through hole 181provided to pass through a bottom surface (one surface of the firsthousing located to be opposite to the exhaust hole) of the first housing11, and a cover 183 (first cover) for opening or closing the lowerthrough hole.

The first cover 183 may rotatably be provided in the first housing 11.In this case, as shown in FIG. 2, a shaft 12 forming a rotation centerof the first cover and a fastening unit 14 provided to face the shaft 12may be provided on the circumferential surface of the first housing 11,and a first fastening unit 185 coupled to the shaft 12 and a secondfastening unit 187 provided on a free end of the first cover 183 anddetachably coupled to the fastening unit 14 may be provided in the firstcover 183.

Moreover, a sealing portion 189 compressed between the first housing 11and the first cover 183 when the lower through hole 181 is closed mayfurther be provided in the first cover 183. Preferably, the sealingportion 189 is made of an elastic body such as rubber.

As described above, the fan 5 is provided in the second housing 13 tomove the air of the housing 1 to the exhaust unit 17, and the particleseparator 4 is provided in the first housing 11 and provides a path forguiding the air entering the intake unit 15 to the fan 5. Particles suchas dust contained in the air are separated from the air by a centrifugalforce while the particle separator 4 is moving to the fan 5 along thepath. A detailed structure of the particle separator is as follows.

The particle separator 4 includes a chamber forming portion 41 forforming a first chamber 41 a and a second chamber 41 b inside the firsthousing 1, and a cyclone forming portion 42 for forming an air currentarousing a centrifugal force while supplying the air inside the secondchamber 41 b to the fan 5.

The chamber forming portion 41 may include a partition 411 providedinside the housing 1, partitioning the first housing 1 and the secondhousing 13 from each other, chamber bodies 413 and 415 provided as acylinder having one end fixed to the partition 411 and the other endwhich is in contact with the first cover 183, partitioning an innerspace of the first housing into two chambers 41 a and 41 b, and a bodypartition 417 for partitioning the second chamber 41 b formed inside thechamber body 415 into a first space 418 and a second space 419.

The partition 411 may be provided even in any shape that can partitionthe inner space of the first housing from an inner space of the secondhousing. The partition 411 is provided with a partition through hole 412provided to pass through the partition.

The chamber bodies may be provided as a first body 413 fixed to thepartition 411 and a second body 415 fixed to the first body. In thiscase, the partition through hole 412 should be provided to communicatethe second chamber 41 b with the inner space of the second housing. Thatis, the first body 413 should be provided in a shape surrounding thepartition through hole 412.

The first body 413 and the second body 415 may be provided in a hollowcylinder shape, and the second body 415 may be provided such that itsone end is fixed to a free end of the first body 413 and its other endis in contact with the sealing portion 183 of the first cover.

A plurality of communication holes 414 for communicating the firstchamber 41 a with the first space 418 are provided on a circumferentialsurface of the first body 413. Therefore, the air entering the firstchamber 41 a through the intake unit 15 may be supplied to the firstspace 418 of the second chamber 41 b through the communication holes414.

A discharge hole 416 (see FIG. 3) is provided on one surface of thesecond body 415 which is in contact with the sealing portion 189 of thefirst cover. The particles stored in the second body 415 may bedischarged to the outside of the housing through the discharge hole 416when the first cover body opens the lower through hole 181.

The body partition 417 is fixed to any one of the first body 413 and thesecond body 415 to partition the inside of the second chamber 41 b intotwo spaces 418 and 419. The first space 418 is a space communicated withthe partition through hole 412, and the second space 419 is a spacewhich is not communicated with the partition through hole 412.

As shown in FIG. 3, the cyclone forming portion 42 may include a pathbody 421 of which one end is fixed to the partition 411 and the otherend is communicated with the second space 419 by passing through thebody partition 417, a discharge pipe 424 located inside the path body421 and communicated with the partition through hole 412, an inlet 423provided to pass through a circumferential surface of the path body 421,and an air flow forming portion 425 provided between an outercircumferential surface of the discharge pipe 424 and an innercircumferential surface of the path body.

The path body 421 is provided as a pipe surrounding the partitionthrough hole 412, and the discharge pipe 424 is located inside the pathbody 421. The path body 421 is communicated with the second space 419through a particle discharge hole 422 provided one a free end (bottomsurface of the path body). The path body 421 may be provided to have adiameter which becomes smaller toward the free end. This is to stronglymaintain intensity of the air flow formed in the path body 421.

The air flow forming portion 425 is provided in a screw shape, and theinlet 423 is located to be higher than the air flow forming portion 425.Therefore, the air entering the path body 421 through the inlet 423 whenthe fan 5 is operated will move (cyclone movement) to be rotated insidethe path body 421 in the middle of moving to the discharge pipe 424through the air flow forming portion 425.

If cyclone movement occurs inside the path body 421, the particlescontained in the air move to a rim (the circumferential surface of thepath body) of the path by means of a centrifugal force and then will bedischarged to the second space 419 by means of gravity.

Unlike the shown drawing, the inlet 423 may be provided as a holeprovided to pass through an upper surface of the path body 421. In thiscase, an upper end of the path body 421 should be provided to be spacedapart from the partition 411 without being fixed to the partition 411.Since the path body 421 is fixed to the partition 411 through the airflow forming portion 425 and the discharge pipe 424, the path body 421may maintain a state fixed to the partition 411 even though the upperend of the path body 421 is spaced apart from the partition 411.

The cyclone forming portion 42 having the aforementioned structure maybe provided with a plurality of cyclone forming portions. FIG. 3illustrates an example of a particle separator 4 provided with ninecyclone forming portions 42.

As shown in FIG. 2, the fan 5 may include a case 51 provided in thesecond housing 13, an impeller 57 rotatably provided inside the case,and a motor 54 fixed to the case, rotating the impeller 57.

The case 51 is provided with a case intake hole 511 and a case exhausthole 513, and it is preferable that the case intake hole 511 is providedon one surface of the case 51 headed for the partition through hole 412and the case exhaust hole 513 is provided to pass through one surface ofthe case 51 headed for the exhaust hole 175. This is to minimize pathresistance between the partition through hole 412 and the exhaust hole175.

The motor 54 is fixed to a support 515 provided in the case 51. FIG. 2illustrates an example of a case that the support 515 is located betweenthe case intake hole 511 and the case exhaust hole 513 and a rotaryshaft 545 is connected to the impeller 57 by passing through the support515. That is, the motor 54 may include a fixed unit 541 fixed to thesupport 515, a stator 543 provided inside the fixed unit, and apermanent magnet 546 fixed to a free end (one of a rotary shaft locatedinside the fixed unit) of the rotary shaft 545.

The motor 54 may be provided to be supplied with a power through a powersource provided indoor, or may be provided to be supplied with a powerthrough the battery 7 detachably provided in the housing 1.

Meanwhile, for filtering particles which are not removed through theparticle separator 4, the present disclosure may further include atleast one of a first filter 91 and a second filter 92. FIG. 2illustrates an example of a case that the first filter 91 and the secondfilter 92 are provided in the cleaning appliance 100 of the presentdisclosure.

The first filter 91 may be located between the second communication hole19 and the case intake hole 511 and provided to filter the air, and thesecond filter 92 may be located between the case exhaust hole 513 andthe exhaust hole 163 and provided to filter the air.

The first filter 91 and the second filter 92 may be provided to filterparticles having the same size, or may be provided to filter particleshaving different sizes. In the latter case, it is preferable that thesecond filter 92 filters particles smaller than those filtered by thefirst filter 91. This is to minimize the amount of fine dust dischargedto an indoor space.

Hereinafter, an operation process of the cleaning appliance having theaforementioned structure will be described with reference to FIG. 4.

If a power is supplied to the motor 54 to rotate the impeller 57, theair enters the first chamber 41 a through the intake pipe 151 and theintake hole 153. A guide 155 for allowing the air discharged from theintake hole 153 to enter the first chamber 41 a along a tangentdirection of a circumferential surface of the first chamber 41 a isprovided in the intake pipe 151. Therefore, the air entering the firstchamber 41 a will cyclone move along the circumferential surface of thefirst chamber 41 a.

If the air cyclone moves inside the first chamber 41 a, particles willmove to the circumferential surface of the first chamber 41 a by acentrifugal force and then move to the first cover 183 provided on thebottom surface of the first housing by gravity, and the air will enterthe second chamber 41 b through the communication holes 414.

The air entering the second chamber 41 b moves to the path body 421through the inlet 423, and the air entering the path body 421 willcyclone move during the process of passing through the air flow formingportion 425.

If cyclone movement occurs in the path body 421, the particles containedin the air move to the circumferential surface of the path body 421 by acentrifugal force and then discharged to the second space 419 bygravity, and the air will be discharged to the outside of the housing 1through the discharge pipe 424, the partition through hole 412, the caseintake hole 511, the case exhaust hole 513, and the exhaust hole 175.

A user may remove the particles collected in the second space 419 andthe first chamber 41 a by rotating the first chamber 183 to open thelower through hole 181.

As shown in FIG. 2 and FIG. 5, it is preferable that a straight line V2passing through the center of gravity G2 of the fan 5 is provided to beinclined at an angle A greater than 0° and smaller than 90° based on astraight line V1 passing through the center of gravity G1 of theparticle separator. That is, it is preferable that the rotary shaft 545is provided to be inclined at an angle A greater than 0° and smallerthan 90° based on a straight line V1 passing through the center ofgravity G1 of the particle separator toward a direction where the handle8 is located.

If the rotary shaft 545 is provided in a direction orthogonal to thestraight line V1 passing through the center of gravity G1 of theparticle separator, the air may be discharged toward a direction wherethe handle 8 is located, whereby problems may occur in that displeasureis caused to a user and fine dust is sprayed to a user.

Meanwhile, if the particle separator 4 and the fan 5 are located up anddown and thus the rotary shaft 545 is located on a straight line V1passing through the center of gravity of the particle separator 4, aproblem may occur in that the center of gravity G1 of the particleseparator and the center of gravity G2 of the fan are all located infront of the handle 8. The case that the center of gravity of thecleaning apparatus is far away from the handle 8 means that the centerof gravity of the cleaning apparatus is located to be far away from theuser's wrist, and if the center of gravity of the cleaning appliance isfar away from the user's wrist, a problem occurs in that a big force isrequired for direction switching or position change of the cleaningappliance.

The angle A set in the rotary shaft 545 may solve the above twoproblems. That is, since the angle of the rotary shaft 545 is smallerthan 90°, the air is not discharged to the direction where the handle 8is located.

Also, since the center of gravity G2 of the fan is close to the handle8, if the angle A of the rotary shaft with respect to the straight lineV1 passing through the center of gravity of the particle separator is0°, the center of gravity of the cleaning appliance may move to thedirection where the handle 8 is located. Therefore, the user may handlethe cleaning appliance 100 by using a relatively small force.

Meanwhile, it is preferable that an angle of the second housing 13inclined toward the handle with respect to a vertical line passingthrough the center of the first housing 11 is set to be equal to theangle A of the rotary shaft 545 inclined toward the straight line V1(straight line orthogonal to the first cover) passing through the centerof gravity of the particle separator.

However, it is preferable that the inclined angle A of the rotary shaft545 with respect to the straight line V1 passing through the center ofgravity of the particle separator is set to 30° or more and 60° or less.This is because that it is difficult to expect a big difference from theconventional cleaning appliance having an incline angle of 0° if theinclined angle A is less than 30° and it is difficult to expect a bigdifference from the conventional cleaning appliance having an inclineangle of 90° if the inclined angle A is 60° or more.

FIG. 5 illustrates an example of a case that an inclined angle A of therotary shaft 545 with respect to the straight line V1 passing throughthe center of gravity of the particle separator is set to 45°. Accordingto an experiment, in this case, it is evaluated that load felt by a userin handling of the cleaning appliance is the lowest.

As described above, the motor 54 provided in the fan may be provided tobe supplied with a power through the battery 7 detachably provided inthe housing 1. In this case, the circumferential surface of the firsthousing 1 should be provided with a battery housing 6 for storing thebattery 7.

The battery housing 6 provided in the present disclosure is located at apoint (spaced point of 180°) located to be opposite to the point wherethe intake unit 15 is located, in the space provided by thecircumferential surface of the first housing 11. Also, the batteryhousing 6 is provided to be protruded toward a direction far away fromthe circumferential surface of the first housing 11.

The battery 7 may detachably be inserted into the battery housing 6through an insertion hole 61 (see FIG. 1) provided to pass through abottom surface of the battery housing 6 a side of the battery housing 6.

In this case, one end of the handle 8 may be fixed to thecircumferential surface of the second housing 13 and the other end ofthe handle 8 may be fixed to an upper surface of the battery housing 6.That is, the handle 8 may include a bar shaped handle body 81 extendedfrom the battery housing 6 toward the second housing 13 and a bar shapedconnection body 83 connecting the handle body 81 to the circumferentialsurface of the second housing 13.

The handle body 81 may be provided to have an inclined angle of 70° to80° with respect to a reference line L1 passing through the center ofthe intake unit. FIG. 5 illustrates an example of a case that a straightline L2 passing through the center of the handle body 81 has an inclinedangle of 75° with respect to the reference line L1.

If a height of the battery housing 6 is increased, since a length of thehandle body 81 may be reduced to cause inconvenience of a user, it ispreferable that a length (length of Y-axis directional battery) of thebattery 7 from the circumferential surface of the first housing 11 to adirection where the handle body 81 is located is set to be longer than alength (length of Z-axis directional battery) of the battery 7 withrespect to a height direction of the first housing 11 and a length(length of X-axis directional battery) of the battery with respect to adiameter direction of the first housing 11.

Moreover, it is preferable that the center of gravity G2 of the fan islocated between the center of gravity G1 of the particle separator andthe center of gravity G3 of the battery and the center of gravity G3 ofthe battery may be provided to be located between the center of gravityG2 of the fan and the center of gravity G4 of the handle 8. This is toallow a user to handle the cleaning appliance by using a small force byarranging each of the centers of gravities G1, G2 and G3 to be closed tothe center of gravity G4 of the handle.

Meanwhile, even though the center of gravity G2 of the fan is locatedbetween the center of gravity G1 of the particle separator and thecenter of gravity G3 of the battery and the center of gravity G3 of thebattery is located between the center of gravity G2 of the fan and thecenter of gravity G4 of the handle, if the centers of gravities G1, G2and G3 of the fan, the particle separator and the battery are located onone straight line, the center of gravity of the cleaning appliance willbe far away from the handle 8.

Therefore, it is preferable that the center of gravity G2 of the fan islocated above the reference line L1 passing through the center of theintake unit 15 and the center of gravity G1 of the particle separatorand the center of gravity G3 of the battery are located below thereference line L1 passing through the center of the intake unit.

However, the center of gravity G4 of the handle may be located on thereference line L1 passing through the center of the intake unit, or maybe located below the reference line L1 passing through the center of theintake unit.

Also, as shown in FIG. 6, it is preferable that the center of gravity G2of the fan, the center of gravity G1 of the particle separator, thecenter of gravity G3 of the battery, and the center of gravity G4 of thehandle are provided on a single plane (height directional section of thecleaning apparatus). That is, it is preferable that the center ofgravity G2 of the fan, the center of gravity G1 of the particleseparator, the center of gravity G3 of the battery, and the center ofgravity G4 of the handle are all located on a single vertical surfaceincluding a straight line passing through the center of the intake unit.This is because that the case that the centers of gravities G1, G2, G3and G4 are all located on a height directional section (Z-axisdirection) of the cleaning apparatus is more favorable for handling ofthe cleaning apparatus.

It will be apparent to those skilled in the art that the presentdisclosure may be embodied in other specific forms without departingfrom the spirit and essential characteristics of the disclosure. Thus,the above embodiments are to be considered in all respects asillustrative and not restrictive. The scope of the disclosure should bedetermined by reasonable interpretation of the appended claims and allchange which comes within the equivalent scope of the disclosure areincluded in the scope of the disclosure.

What is claimed is:
 1. A cleaning appliance comprising: a housingprovided in a hollow cylinder shape, having an intake unit and anexhaust unit; a fan provided to include an impeller located in thehousing, a rotary shaft to which the impeller is fixed, and a motorrotating the rotary shaft, moving the air entering the housing throughthe intake unit to the exhaust unit; a particle separator providedinside the housing to provide a path for guiding the air entering theintake unit to the impeller, separating particles from the air by usinga centrifugal force; a battery housing located at a point spaced apartfrom a pint where the intake unit is located, as much as 180°, in aspace provided by a circumferential surface of the housing and protrudedto be far away from the circumferential surface of the housing; abattery provided in the battery housing, supplying a power to the motor;and a handle provided to connect the circumferential surface of thehousing with the battery housing, wherein the rotary shaft is inclinedat an angle greater than 0° and smaller than 90° toward a directionwhere the handle is located based on a vertical line passing through thecenter of gravity of the particle separator.
 2. The cleaning applianceof claim 1, wherein the rotary shaft is inclined at an angle of 30° to60° toward a direction where the handle is located based on a straightline passing through the center of gravity of the particle separator. 3.The cleaning appliance of claim 1, wherein the rotary shaft is inclinedat an angle of 45° toward a direction where the handle is located basedon a straight line passing through the center of gravity of the particleseparator.
 4. The cleaning appliance of claim 1, wherein the housingincludes: a first housing providing a space in which the particleseparator is stored, provided with the intake unit on a circumferentialsurface; a second housing providing a space in which the fan is stored,inclined from an upper end of the first housing toward a direction wherethe handle is located; a first cover provided to open or close a lowersurface of the first housing; and a second cover provided to open orclose an upper surface of the second housing and provided with theexhaust unit.
 5. The cleaning appliance of claim 1, wherein the angle ofthe second housing inclined toward the handle based on the vertical linepassing through the center of gravity of the particle separator is setto be equal to the angle of the rotary shaft inclined toward the handle.6. The cleaning appliance of claim 5, wherein the handle includes: a barshaped handle body extended from the battery housing toward the secondhousing; and a bar shaped connection body connecting the handle bodywith a circumferential surface of the second housing.
 7. The cleaningappliance of claim 5, wherein a length of the battery from thecircumferential surface of the first housing toward a direction headedfor the handle is set to be longer than a length of the battery toward aheight direction of the first housing and a length of the battery towarda diameter direction of the first housing.
 8. The cleaning appliance ofclaim 5, wherein the center of gravity of the fan is located between thecenter of gravity of the particle separator and the center of gravity ofthe battery, and the center of gravity of the battery is located betweenthe center of gravity of the fan and the center of gravity of thehandle.
 9. The cleaning appliance of claim 8, wherein the center ofgravity of the fan is located above a reference line passing through thecenter of the intake unit, the center of gravity of the particleseparator and the center of gravity of the battery are located below thereference line, and the center of gravity of the handle is located onthe reference line or below the reference line.
 10. The cleaningappliance of claim 9, wherein the center of gravity of the fan, thecenter of gravity of the particle separator, the center of gravity ofthe battery and the center of gravity of the handle are all located on asingle vertical line that includes the reference line.
 11. The cleaningappliance of claim 4, wherein the particle separator includes: apartition provided inside the housing, partitioning the first housingand the second housing from each other; a partition through holeprovided to pass through the partition; chamber bodies provided in ahollow cylinder shape, having one end fixed to the partition and theother end which is in contact with the first cover, and partitioning aninner space of the first housing into a first chamber communicated withthe intake unit and a second chamber communicated with the partitionthrough hole; a body partition partitioning an inner space of the secondchamber into a first space communicated with the partition through holeand a second space which is not communicated with the partition throughhole; a communication hole provided to pass through the chamber bodiesto communicate the first space with the first chamber; a path bodyprovided in a pipe surrounding the partition through hole, having oneend fixed to the partition and the other end communicated with thesecond space by passing through the body partition; a discharge pipeprovided as a pipe extended from the partition through hole toward thebody partition and provided inside the path body; an inlet provided topass through the path body, guiding the air supplied to thecommunication hole to the inside the path body; and an air flow formingportion provided in a screw shape between the discharge pipe and thepath body, rotating the air entering the inlet inside the path body. 12.The cleaning appliance of claim 11, wherein the fan includes: a caseprovided in the second housing, storing the impeller therein; a caseintake hole provided on one surface of the case headed for the partitionthrough hole to allow the air to enter the inside of the case; and acase exhaust hole provided on one surface of the case headed for theexhaust unit to discharge the air inside the case to the outside. 13.The cleaning appliance of claim 12, further comprising: a first filterlocated between the partition through hole and the case intake hole,filtering the air; and a second filter located between the case exhausthole and the exhaust unit to filter the air, wherein the second filteris provided to filter particles smaller than those filtered by the firstfilter.